World Cat 2011, Owner'S Manual

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2012 World Cat 290EC Owners Manual
•
Trim both engines down or in (the motors act as trim tabs forcing the bow down)
•
Big advantage operating in shallow water (12” to 16” depending on the model)
•
Quickly increase speed to get the boat on plane then slow down to 3500 RPM’s
•
Adjust trim out until the motors cavitate then tap trim in
•
Feel/hear the motors and do not watch the trim gauges
•
A smooth ride is more important than having your engine RPM’s synchronized
5.10.5 Keep the boat level (if the seas change or people move on the boat)
•
Trim the
High-Side-High
. When one side of the bow is high compared to the horizon, simply trim the high
side motor up or out. (If it cavitates then trim the
low-side-low
)
•
Different models have different sensitivity to trim (do not over-correct as this may cause the boat to pitch in
flat calm water at high speeds)
5.10.6 Handling different sea conditions
Head sea
: trim motors in to keep the bow down
Following sea
: trim out to keep the bow out of the water
Calm water
: trim engines up to run on the back of the hull
5.10.7 Boating Tips
Experience is the best way to determine the handling characteristics of your catamaran. Operating the boat in multiple
sea conditions and under various loads will help you predict how the boat will perform in any situation. World Cat
provides the following recommendations regarding the performance of your catamaran:
•
Establish an RPM chart which details the speed and fuel consumption at various RPM levels to achieve the
most economical operation.
•
Monitor fuel gauges to determine the amount of operating time remaining at a given reading.
•
Determine minimum speed for effective steering in close quarters.
•
Determine the turning radius required at various speeds.
•
Determine the rates of acceleration and deceleration with various load conditions. Include the
distance
required to stop the boat at various speeds.
Use the information provided in section 6 of the
Sportfish, Cruisers, Yachts Owner’s Manual
for more information on
boat handling.
5.11 P
ERFORMANCE
F
ACTORS
Proper setup and maintenance of the systems on your boat is important to ensuring proper performance, but be aware
they are not the only factors which affect it. Several things which contribute to the level of performance of your
catamaran can change between or during trips.
5.11.1 Engine Efficiency
Without proper maintenance, your engine(s) will gradually lose power, resulting in a loss of speed. Use the
recommendations in the engine’s owners manual to schedule routine maintenance procedures and as a guide for the
correct RPM range for your engines. Neglecting to do so may result in loss of performance and an increased risk of
failure.
5.11.2 Propeller Condition
The size and condition of your prop also plays a major role in the performance of your catamaran. A damaged prop can
result in lower speeds, sudden drops in RPM, increased fuel consumption, and severe vibration while running.
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